/*****************************************************************************
 * Copyright (c) 2019, Nations Technologies Inc.
 *
 * All rights reserved.
 * ****************************************************************************
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Nations' name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
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 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY NATIONS "AS IS" AND ANY EXPRESS OR
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/**
 * @brief 系统初始化功能。
 * @file system_n32g020xx.c
 * @author Nations Solution Team
 * @version v1.0.1
 * @copyright Copyright (c) 2019, Nations Technologies Inc. All rights reserved.
 */

#include "n32g020xx_cgu.h"
#include "n32g020xx_icache.h"
/*----------------------------------------------------------------------------
  System Core Clock update function
 *----------------------------------------------------------------------------*/
void SystemCoreClockUpdate(void)
{
}

/*----------------------------------------------------------------------------
  System initialization function
 *----------------------------------------------------------------------------*/
void SystemInit(void)
{
    // 主频升到80M
    CGU_ConfigOscClock(OSC_FREQUENCE_80M);

    // 关闭时钟加扰
    *(volatile uint32_t*)0x60000000 &= ~BIT4;
    // 关闭动态加解密
    *(volatile uint32_t*)0x60000004 = 0;

    // 启动ICACHE
    ICACHE_Clear();
    ICACHE_Enable();
}
